You should check it for any cracks in the seal inside the tank, and you can put water (without fish) in the tank to see if it leaks any where. If it doesn't then you can certainly use it for fishes. Just in case you don't know... you should never lift a tank with all its water in it, especially with an older tank.

Hope this helps.
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Phishie
Site Coordinator

"An ounce of prevention is worth a pound of cure."

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